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SLSbio12cellstruct2
SLS Bio12 cell structure abigail igba
| Question | Answer |
|---|---|
| Active Transport | the transportation of molecules against its concentration gradient with the use of ATP |
| carrier protein | they are proteins involved in the movement of large molecules in and out of the cell down their concentration gradient |
| cell membrane | this is a selectively permeable layer which controls what goes in and comes out of the cell |
| channel proteins | this is a transport protein that provides a tunnel through the membrane that is specific for what can enter it |
| concentration Gradient | the gradual difference in concentration of a dissolved substance in a solution between a region of high density to low density |
| diffusion | this is the process whereby molecules move from regions of high concentration to a low concentration |
| endocytosis | this is the movement of molecules into the cell with the use of vesicles |
| exocytosis | this is the movement of molecules out of the cell with the use of vesicles |
| facilitated transport | the movement of a chemical substance across the cell membrane without the use of energy by the cell |
| fluid mosaic membrane model | this a fluid membrane which is made up of different types of protein |
| glycolipid | this is a carbohydrate bound to a lipid |
| hydrophilic | these are substances are substances that have an affinity or liking for water |
| hydrophobic | these are substances are substances that have a tendency to repel water |
| hypertonic | this is a solution which contains a higher solute concentration than its surrounding cell |
| hypotonic | this is a solution which contains a lower solute concentration than its surrounding cell |
| isotonic | this is a solution which contains the same solute concentration as its surrounding cells |
| osmosis | this is the movement of water molecules across a selectively permeable membrane from a region of low concentration to high concntration |
| passive transport | the transportation of molecules down its concentration gradient without the use of ATP |
| Phagocytosis | this is the process of engulfing a solid particle by phagocytes |
| phospholipid | this is a substance that has a hydrophilic head (phosphate group) and a hydrophobic tail(lipid). |
| phospholipid bi-layer | two layer of phospholipid arranged in such a way that the hydrophobic tails are projecting inwards while their polar head groups are facing outside |
| pinocytosis | a process by which liquid droplets and small particles are ingested by a living cell |
| pressure gradient | pressure gradient is change in pressure of a substance from high concentration to low concentration |
| selectively permeable | a partially permeable membrane that will allow certain molecules to pass through it |
| tonicty | this refers to the effect a solution has on a cell |
Created by:
abby2
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